import java.io.*;

import java.util.*;

public class Example10_16 {

   public static void main(String args[]) {

      File file = new File("student.txt");

      Scanner sc=null;

      int count=0;

      double sum=0;

      try { double score=0;

            sc = new Scanner(file);

            sc.useDelimiter("[^0123456789.]+"); 

            while(sc.hasNextDouble()){

                score=sc.nextDouble();

                count++;

                sum=sum+score;

                System.out.println(score); 

            }

            double aver=sum/count;

            System.out.println("平均成绩:"+aver);

      }

      catch(Exception exp){

         System.out.println(exp); 

      }

   }

}
